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Diphenyl ether derivative

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专利汇可以提供Diphenyl ether derivative专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A compound of formula I (R
1 is lower alkoxyalkyl or lower alkylthioalkyl; R and R
2 are H or lower alkyl).
EXAMPLE: Ethoxymethyl O-methoxycarbonylmethyl-5- (2-chloro-4-trifluoro- methylphexy)-2-nitrobenzohydroximate.
USE: A herbicide. The compound exhibits a strong herbicidal activity against weeds in paddy fields, upland fields, orchards, mulberry fields, etc., and has selectivity to cultivated crops such as rice or corn.
PREPARATION: The compound of formula I is prepared by reacting an O- substituted-2-nitro-5-(substituted phenoxy)benzhydroxamic acid derivative of formula II [X is halogen or -OS
2 R' (R' is (substituted)alkyl, phenyl, etc.)] with a halogen compound of formula III, e.g., in a solvent such as methanol in the presence of a base such as pyridine or NaOH.
COPYRIGHT: (C)1989,JPO&Japio,下面是Diphenyl ether derivative专利的具体信息内容。

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